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首页> 外文期刊>Romanian Journal of Transport Infrastructure >Asphalt Mixtures with Limestone Aggregate for Base Layer
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Asphalt Mixtures with Limestone Aggregate for Base Layer

机译：石灰石骨料的沥青混合料

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摘要

Asphalt mixtures are mixtures of mineral aggregates, filler, bitumen and eventually additives in proportions determined by recipe designed in the laboratory. Asphalt mixtures used as base course are bituminous concrete. The natural aggregates are granular materials of mineral origin that come from natural or artificial crushing of the rocks. In our country there are the various rocks: eruptive or magmatic rocks, metamorphic rocks, sedimentary rocks. To the category of sedimentary rocks belong limestone. Sedimentary rocks are characterized by relatively high porosity and a pronounced stratification, which causes mechanical resistance to be low and vary by direction of load. Due to the structure less dense and weaker mechanical resistance, the limestone are used less in heavy traffic pavement structures. This paper presents an asphalt mixture recipe for the base layer developed in the Laboratory of Roads from Technical University of Civil Engineering Bucharest (TUCEB), using limestone aggregates extracted from Hoghiz Quarry. The paper contains laboratory test results to determine the recipe and laboratory findings leading to the schedule of product.
机译：沥青混合物是矿物集料，填料，沥青和最终添加剂的混合物，其比例由实验室设计的配方决定。用作基础层的沥青混合物是沥青混凝土。天然骨料是矿物来源的颗粒状材料，来自天然或人工破碎的岩石。在我国，岩石种类繁多：喷发岩浆或岩浆岩，变质岩，沉积岩。沉积岩属于石灰石。沉积岩具有较高的孔隙度和明显的分层特征，这导致机械阻力较低，并随载荷方向而变化。由于结构密度较小且机械阻力较弱，因此在繁忙的人行道结构中很少使用石灰石。本文介绍了由布加勒斯特土木工程大学（TUCEB）在道路实验室开发的基层沥青混合料配方，该配方使用了从Hoghiz Quarry提取的石灰石骨料。本文包含实验室测试结果，以确定配方和实验室发现，以制定产品时间表。

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